METHOD FOR DRYING ALIPHATIC C-C-ALCOHOLS Russian patent published in 2003 - IPC

FIELD: organic chemistry, chemical technology. SUBSTANCE: invention relates to method for drying aliphatic C₁-C₃-alcohols. Method involves adsorption of an aqueous-alcoholic mixture on zeolite adsorbent in two adsorbers working in successive or parallel regime. Mixtures is fed by upper of adsorbers at enhanced temperature and pressure at inlet into adsorbers and using zeolite of structural type A corresponding to the chemical formula: Me_aO•AL₂O₃•bSiO₂•cH₂O wherein Me is K, Na, Ca, Mg, Ba, Sr taken in the different ratios and combinations; a = 0.8-2.1; b = 1.5-2.2; c = 0.2-25. Adsorption of an aqueous-alcoholic mixture is carried out at temperatures at inlet into adsorbers that is above water boiling point 105-140 C. Method allows minimization loss of alcohol at zeolite drying and obtain "for a run" the deep-dried product. EFFECT: improved drying method. 3 cl, 1 tbl, 1 dwg, 1 ex